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arXiv 0901.3632astro-ph.SR
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探测恒星振荡的最佳权重:应用于半人马座阿尔法星A和B,以及水蛇座贝塔星

Optimizing Weights for the Detection of Stellar Oscillations: Application to alpha Centauri A and B, and beta Hydri

T. Arentoft, H. Kjeldsen, T. R. Bedding

摘要:

我们最近开发了一种新的方法来调整权重,以尽量减少旁瓣的频谱窗口。在这里,我们将这种方法应用于三颗恒星(α Cen A,α Cen B和β Hyi)的两个站点的速度观测结果。与我们以前的方法相比,最小化旁瓣,其中涉及调整的权重,在夜间的基础上,我们发现一个显着的改善频率分辨率。在α Cen A的情况下,这应该允许检测数据中的额外振荡模式。

英文摘要:

We have recently developed a new method for adjusting weights to minimize sidelobes in the spectral window. Here we show the results of applying this method to published two-site velocity observations of three stars (alpha Cen A, alpha Cen B and beta Hyi). Compared to our previous method of minimizing sidelobes, which involved adjusting the weights on a night-by-night basis, we find a significant improvement in frequency resolution. In the case of alpha Cen A, this should allow the detection of extra oscillation modes in the data.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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